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Water and Land Resources Division

King County, Washington

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Water and Land Resources Division, King County, Washington

Cedar Rapids Levee Setback Project - 2012

King County applied for and received all permits related to summer 2012 construction, which will focus on right bank repairs. Right bank construction was completed in September 2012 to provide a stable setback levee and remove remnant rocks from the channel. Planting work will continue in the fall and winter of 2013.

Project overview

The Cedar Rapids Levee Setback Repair Project will repair the existing Cedar Rapids setback levees along both the left and right banks of the Cedar River.

cedar_rapids_project_areaThe project is located within the Cedar Rapids Natural Area on the Cedar River between river mile 7.2 and 7.4. The levee setback modification along the left bank will occur between river mile 7.2 and 7.4, and the revetment setback project on the right bank will occur at river mile 7.25. These river locations roughly correspond to the 17600 block of State Route 169 (Maple Valley Highway) on the left bank, and Southeast Jones Road on the right bank.

A buried rock toe is designed and permitted along the riverward face of the left (south) bank. This area will be monitored during floods to determine if emergency actions is required.

On the right (north) bank, a short segment of the upstream end of the Brassfield Revetment was set back and will tie into the Cedar Rapids Setback Levee. Large angular rock placed in the channel during a 2011 emergency project was incorporated into the new facility. Native trees and shrubs will be planted to restore the areas impacted by this project.


Project goals

  • Flood damage reduction:
    • home buyouts to remove from harm's way
    • increase flood capacity of the reach
    • continue flood protection of adjacent properties
  • Salmon recovery through habitat improvements
  • Design that addresses recreational uses
  • 2012 goals are to repair existing levee to provide adequate erosion protection

Project timeline

Benchmark Date
30% design and environmental review December 2011
Design and permitting Winter/early spring 2012
Right bank construction Completed Summer 2012
Install native plants Fall 2012

Project documents

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For more information about the Cedar Rapids Levee Setback Repair project, please contact John Engel, Supervising Engineer, Cedar River Basin, of the King County River and Floodplain Management Section.